Air sweeping assembly, air regulating device and air conditioner

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Solution Overview

Problem

Existing air regulating devices face difficulties in conveniently defining the initial position of blades in air sweeping assemblies due to complex position limiting structures on moving air guiding plates, making it hard to control the rotation angle of the blades.

Innovation Solution

An air sweeping assembly with a first position limiting member on a stationary fixing portion and a second position limiting member on the rotation shaft, allowing the initial position of the rotation shaft to be defined easily, enabling convenient regulation of the blades' rotation angle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a position limiting structure is designed on the moving air guiding plate, then the initial position of the blades can be limited, but the structure becomes complex and the control program becomes complicated

Engineering Contradiction:

Improveinitial position definitionVSAvoidposition limiting structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of placing the position limiting structure on the moving air guiding plate, the patent inverts the approach by placing the first position limiting member on the stationary fixing portion and the second position limiting member on the rotation shaft. This inversion simplifies the structure by using the stationary part as the reference for position limitation, eliminating the complexity of limiting position on a moving component.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The position limiting function is segmented into two separate members: the first position limiting member on the fixing portion and the second position limiting member on the rotation shaft. This segmentation allows each member to have a specific, simple function, reducing overall structural complexity while maintaining reliable initial position definition.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a position limiting structure is designed on the moving air guiding plate, then the initial position of the blades can be limited, but the control program to find the initial position becomes complicated

Engineering Contradiction:

Improveinitial position definitionVSAvoidcontrol program

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent inverts the position limiting approach by using the stationary fixing portion as the reference point instead of the moving air guiding plate. This inversion provides a fixed reference that simplifies the control program, as the initial position can be determined by a fixed geometric relationship rather than by tracking a moving component's position.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The stationary first position limiting member on the fixing portion serves as a self-contained reference that automatically defines the initial position through its fixed geometric relationship with the second position limiting member on the rotation shaft, eliminating the need for complex control programs to search for or calculate the initial position.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If the air guiding plate is swung to regulate air angle, then air direction control is achieved, but the position limiting structure becomes difficult to design

Engineering Contradiction:

Improveair direction regulationVSAvoidposition limiting structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent resolves the design difficulty by inverting the position limiting approach: instead of limiting position on the swinging air guiding plate, it places the first position limiting member on the stationary fixing portion. This allows the air guiding plate to swing freely for air direction regulation while the position limiting function is handled by the stationary structure, decoupling the two functions and simplifying the overall design.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent segments the position limiting function from the air guiding function. The first position limiting member on the fixing portion handles initial position definition, while the swinging air guiding plate handles air direction regulation. This segmentation allows each component to perform its function independently without interfering with the other, reducing design complexity.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11788765B2Air sweeping assembly, air regulating device and air conditioner

Publication Date: 2023.10.17 GREE ELECTRIC APPLIANCE INC OF ZHUHAI

AI summary

Some embodiments of the present disclosure provide an air sweeping assembly, an air regulating device and an air conditioner. The air sweeping assembly includes: a rotation shaft (10), the rotation shaft (10) being provided with blades (20) thereon; a driving device, the driving device including a fixing portion (31) and a driving portion disposed on the fixing portion (31); the driving portion being drivingly connected with the rotation shaft (10), and the driving portion being configured to drive the rotation shaft (10) to rotate; and a first position limiting member (40) disposed on the fixing portion (31); the first position limiting member (40) being configured to define an initial position of the rotation shaft (10) in a circumferential direction.